HELPMSGSTRING message
A common dialog box sends the HELPMSGSTRING registered message to the window procedure of its owner window when the user clicks the Help button.
#define HELPMSGSTRING TEXT("commdlg_help")
Parameters
-
wParam
-
A handle to the common dialog box.
-
lParam
-
A pointer to the initialization structure for the common dialog box. This structure can be a CHOOSECOLOR, CHOOSEFONT, FINDREPLACE, OPENFILENAME, PRINTDLG or PAGESETUPDLG structure.
Return value
This message has no return value.
Remarks
You must specify the HELPMSGSTRING constant in a call to the RegisterWindowMessage function to get the identifier for the message sent by the dialog box.
When you create the dialog box, use the hwndOwner member of the initialization structure to identify the window to receive HELPMSGSTRING messages.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|
| Unicode and ANSI names |
HELPMSGSTRINGW (Unicode) and HELPMSGSTRINGA (ANSI) |